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Effects of breasrfeeding on pstpartum depression and Bonding

Research Project

Project/Area Number 16H05585
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Lifelong developmental nursing
Research InstitutionDokkyo Medical University (2017-2020)
Osaka University (2016)

Principal Investigator

Mieko SHIMADA  獨協医科大学, 看護学部, 特任教授 (40262802)

Co-Investigator(Kenkyū-buntansha) 水畑 喜代子  獨協医科大学, 看護学部, 准教授 (40346242)
疋田 直子  獨協医科大学, 看護学部, 講師 (60801925)
白石 三恵  大阪大学, 医学系研究科, 准教授 (50632220)
松崎 政代  大阪大学, 医学系研究科, 教授 (40547824)
春名 めぐみ  東京大学, 大学院医学系研究科(医学部), 教授 (00332601)
谷口 初美  福岡女学院看護大学, 看護学部, 教授 (30295034)
Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywords母乳育児 / コルチゾール / ストレス / bonding / 産後うつ / Bonding / オキシトン / メラトニン / オキシトシン
Outline of Final Research Achievements

To investigate the effects of breastfeeding on stress and postpartum depression. We examined breastfeeding women using the EPDS, the Perceived Stress Scale, and the Breastfeeding Self-Efficacy Scale, and measured the salivary cortisol levels before and after breastfeeding. There was a negative correlation between the duration of suckling and changes in salivary cortisol levels following breastfeeding. Salivary cortisol levels immediately following breastfeeding were significantly lower compared to mothers who used mixed feeding methods. Breastfeeding mothers had lower perceived stress than mothers using mixed feeding methods. There was no association between breastfeeding and postpartum depression; however, there was an association between postpartum depression and perceived stress. Salivary cortisol levels significantly decreased following breastfeeding, with longer suckling times with negative correlation. Breastfeeding reduced stress and increased breastfeeding self-efficacy.

Academic Significance and Societal Importance of the Research Achievements

授乳時の乳頭刺激によって分泌されるオキシトシンは、ストレス反応の抑制と関係する。本研究で、ストレスホルモンである唾液中コルチゾール値は、授乳中の乳首への吸啜時間が長いほど減少することが、初めて生理学的に明らかにされた。母乳育児は知覚ストレスも減少させ、母乳育児への効力感を高めることが明らかにされた。特に、母乳が主体の混合栄養群では,授乳後の唾液中コルチゾール値は有意に低下した。更に、母乳栄養の母親は混合栄養の母親に比べ,知覚ストレスが低かった。オキシトシンはストレスの他、産後うつ病のリスクを軽減させ、母親の児に対するBondingを強化する作用もあるため、母乳育児を推進する社会的意義がある。

Report

(6 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (7 results)

All 2021 2020 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Effects of Breastfeeding on Stress Measured by Saliva Cortisol Level and Perceived Stress2020

    • Author(s)
      Mizuhata Kiyoko、Taniguchi Hatsumi、Hikita Naoko、Shimada Mieko、Morokuma Seiichi
    • Journal Title

      Asian/Pacific Island Nursing Journal

      Volume: 5 Issue: 3 Pages: 128-138

    • DOI

      10.31372/20200503.1100

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Post-breastfeeding stress response and breastfeeding self-efficacy as modifiable predictors of exclusive breastfeeding at 3?months postpartum: a prospective cohort study2020

    • Author(s)
      Shiraishi Mie、Matsuzaki Masayo、Kurihara Shoko、Iwamoto Maki、Shimada Mieko
    • Journal Title

      BMC Pregnancy and Childbirth

      Volume: 20 Issue: 1 Pages: 730-739

    • DOI

      10.1186/s12884-020-03431-8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Effects of breastfeeding-related self-efficacy and stress on exclusive breastfeeding at 3 months postpartum2021

    • Author(s)
      Mie Shiraishi, Shoko Kurihara, Maki Iwamoto, Masayo Matsuzaki, Mieko Shimada
    • Organizer
      32nd International Confederation of Midwives
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationship between breastfeeding related factors and mother-child bonding at postpartum 3 months: A longitudinal study in Japan2020

    • Author(s)
      Masayo Matsuzaki, Mie Shiraishi, Maki Iwamoto, Shouko Kurihara, Mieko Shimada
    • Organizer
      The 6th International Research Web Conference of World Academy of Nursing
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2週間健診時の産後うつ傾向と栄養方法がその後の育児効力感と産後うつ傾向にもたらす影響について2020

    • Author(s)
      水畑喜代子、青山昭子、川上奈緒子、川田みゆき、磯律子、島田三恵子
    • Organizer
      第61回日本母性衛生学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Relationship between breastfeeding related factors and mother-child bonding at postpartum 3 months: A longitudinal study in Japan2020

    • Author(s)
      Matsuzaki M,Shiraishi M,Iwamoto M,Kurihara S,Shimada M
    • Organizer
      The 6th International Nursing Research Conference of World Academy of Nursing Science (The 6th WANS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 産後1ヶ月時の母乳育児効力感と褥婦の特徴との関連2018

    • Author(s)
      栗原祥子、白石三恵、岩本麻希、松崎政代、島田三恵子
    • Organizer
      第32回日本助産学会, 横浜
    • Related Report
      2017 Annual Research Report

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Published: 2016-04-21   Modified: 2022-01-27  

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